“Dionysius Areopagites in the Works of Saint Gregory Palams: On the Question of a ‘Christological Corrective’ and Related Matters,” Saint Vladimir’s Theological Quarterly 46 (2002): 163-90.

“The Demons Suggest an Illusion of God’s Glory in a Form: Controversy Over the Divine Body and Vision of Glory in Some Late Fourth, Early Fifth Century Monastic Literature,” Studia Monastica 44 (2002): 13-44.

“The Place of the Presence of God: Aphrahat of Persia’s Portrait of the Christian Holy Man,” in ΣΥΝΑΞΙΣ ΕΥΧΑΡΙΣΤΙΑΣ: Studies in Honor of Archimandrite Aimilianos of Simonos Petras, Mount Athos (Athens: Indiktos, 2003), 391-447.

“The Image and Glory of God in Jacob of Serug’s Homily, On That Chariot That Ezekiel the Prophet Saw,” Saint Vladimir’s Theological Quarterly 46 (2003): 323-364.

“‘Suddenly, Christ’: The Place of Negative Theology in the Mystagogy of Dionysius Areopagites,” in Mystics: Presence and Aporia (ed. Michael Kessler and Christian Shepherd; Chicago: University of Chicago Press, 2003), 8-37.

“The Vision of God and the Form of Glory: More Reflections on the Anthropomorphite Controversy of AD 399,” in Abba: The Tradition of Orthodoxy in the West: FS Kallistos Ware (SVS Press, 2007): 273-297.

“Heavenly Mysteries: Themes from Apocalyptic Literature in the Macarian Homilies and Selected Other Fourth Century Ascetical Writers,” in Apocalyptic Themes in Early Christianity (ed. Robert Daly; Grand Rapids: Baker Academic, 2009), 174–192

“Making the Inside like the Outside: Toward a Monastic Sitz im Leben for the Syriac Apocalypse of Daniel,” in To Train His Soul in Books: Syriac Asceticism in Early Christianity (ed. Robin Darling Young and Monica J. Blanchard; CUA Press, 2011).